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JURNAL RISET DIWA BAHARI
Published by Institut Teknologi dan Bisnis Maritim Balik Diwa
ISSN : -     EISSN : 30323177     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Immunology & microbiology
Jurnal Riset Diwa Bahari merupakan jurnal yang diterbitkan oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa, Makassar. Jurnal Riset Diwa Bahari menerima naskah penelitian dan ulasan mengenai biologi kelautan, ekologi perairan, perikanan (budidaya ikan, penangkapan ikan, pengolahan, keanekaragaman spesies, alat tangkap), pencemaran udara, penginderaan jauh kelautan, mikrobiologi, bioteknologi, dan pengelolaan pesisir.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 10 Documents
 1 
Search results for , issue "Volume 3, Nomor 2, 2025" : 10 Documents clear
Etika Pelayanan Akademik di Program Studi Hukum Bisnis ITBM Balik Diwa Luthfi Siraj, Muhammad; Suprianto, Suprianto
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.88

Abstract

This study aims to analyze the academic service ethics of employees at the Balik Diwa Institute of Business and Maritime Technology (ITBM), focusing on three main dimensions: integrity, loyalty, and fairness. Academic service ethics are crucial in creating student satisfaction as users of educational services. This study used a descriptive qualitative method with data collection techniques through interviews, observation, and documentation. Data analysis was conducted using an interactive model that includes data condensation, data presentation, as well as drawing conclusions and verification. The results show that the academic service ethics at ITBM Balik Diwa are quite good, but there are still several weaknesses. In the integrity dimension, employees have demonstrated courage in enforcing regulations, but there is still a sense of bias. In the loyalty dimension, employees demonstrate a love for their work and loyalty to the institution, although coordination between employees needs to be improved. In the justice dimension, employees are generally fair, but are still less open to student complaints, which is why ITBM Balik Diwa urgently needs continuous evaluation and development to strengthen academic service ethics so that services to students are more professional and with high integrity
Assessing the Global Cultivation Practices of Kappaphycus alvarezii: A Comprehensive Review of Growth Dynamics, Nutrient Management, and Biochemical Composition Mulyani, Sri
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.95

Abstract

Kappaphycus alvarezii is a crucial species for carrageenan production, widely used in various industries. This review aims to synthesize global research on the cultivation of K. alvarezii, focusing on growth dynamics, nutrient management, and biochemical composition. Studies show that growth rates are significantly influenced by cultivation methods, such as longline, raft farming, and Integrated Multi-Trophic Aquaculture (IMTA), each offering distinct advantages in terms of yield and ecological sustainability. Nutrient management, particularly nitrogen and phosphorus level, plays a critical role in optimizing both biomass and carrageenan quality. The use of biostimulants and fertilizers has been found to enhance growth and biochemical properties, yet careful nutrient control is essential to prevent negative environmental impacts such as eutrophication. Genetic diversity, particularly through the selection of wild versus cultivated strains, is another important factor in farm resilience. Wild strains provide greater environmental adaptability and disease resistance, while selected strains typically offer faster growth and higher yields. However, the reduced genetic diversity in clonal farming raises concerns about long-term sustainability. Research gaps identified include the need for long-term studies on the sustainability of farming techniques, particularly in the context of climate change, and more extensive investigations into the ecological and economic benefits of IMTA systems. Future research should focus on integrating biological, ecological, and economic aspects to optimize K. alvarezii farming and enhance its contribution to the blue economy
Bioreproduktif dan Distribusi Ukuran Populasi dalam Menentukan Ukuran Layak Tangkap Ikan Tembang (Sardinella fimbriata Valenciennes, 1847) dari Perairan Selat Makassar Kantun, Wayan; Bitti, Amel
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.96

Abstract

The intensive fishing of Fringescale sardinella the waters around Makassar has led to suspicions of a decline in catchable size. This study aims to analyze the size at first gonad maturity as a basis for determining catchable size. The research was conducted from October to December 2025 at the Beba Fish Landing Ground, Takalar Regency, using a quantitative approach through a survey method to obtain biological data. The results showed that the total length of the Fringescale sardinella caught ranged from 10 to 14.5 cm (12.029 ± 0.926 cm). Analysis of gonad maturity showed that the size at first gonad maturity (Lm) for female Fringescale sardinella was 12.66 cm, while for males it was 13.02 cm. The combined average Lm was 12.89 cm. Meanwhile, the average size of fish caught during the study reached 12.09 cm, lower than the overall gonad maturity size of 13.02 cm. The comparison between catch size and gonad maturity size indicates that most fish caught were below reproductive size. This condition indicates that the majority of individuals in the population were not optimally contributing to the natural spawning process when caught. Catching mackerel at this size cannot be categorized as suitable for fishing and has the potential to disrupt stock sustainability. These results emphasize the importance of setting minimum catch sizes and monitoring exploitation intensity to maintain population balance and support sustainable fisheries management
Akumulasi Logam Berat Merkuri pada Ikan Tembang (Sardinella fimbriata Valenciennes, 1847) Ditinjau dari Kebiasaan Makan di Perairan Selat Makassar Kantun, Wayan; Husna, Asmaul
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.97

Abstract

The Fringe scale sardinella is a small pelagic fish that plays a strategic role in capture fisheries in the Makassar Strait. Information on the relationship between dietary habits and the accumulation of the heavy metal mercury (Hg) in various fish sizes is still relatively limited. Mercury is known as a heavy metal that is toxic, persistent, and capable of biomagnification in the food chain, thus potentially posing a risk to human health. This study aims to analyze the relationship between dietary habits and body size of Fringe scale sardinella and mercury content in fish muscle tissue. The study was conducted using a descriptive analytical method with a survey approach. Fringe scale sardinella samples were grouped into three size classes: small, medium, and large. Dietary habits were analyzed through identification of stomach contents, while mercury content was analyzed in muscle tissue using the SNI: 2354.6.2016 method. The results of the study showed a shift in the feeding habits of Fringe scale sardinella as their size increased, from the dominance of phytoplankton and micro zooplankton at small sizes to larger zooplankton at medium and large sizes, which was followed by variations in mercury content between fish sizes. The lowest mercury content was found in small fish (0.2676 ± 0.008 mg/kg), increased in medium-sized fish (0.3536 ± 0.010 mg/kg) as the maximum accumulation phase, and decreased again in large fish (0.2996 ± 0.004 mg/kg), which indicates the role of growth dilution effects and physiological mechanisms of fish in controlling mercury accumulation. The feeding habits and body size of Fringe scale sardinella closely related to mercury accumulation patterns, thus becoming an important aspect in assessing the risk of mercury contamination in fish resources in the Makassar Strait waters
Status Stok dan Pengelolaan Berkelanjutan Ikan Selar (Selar boops Cuvier, 1833.) di WPPRI 713 Berdasarkan Analisis Surplus Produksi Kantun, Wayan; Hernita, Hernita
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.98

Abstract

Fundamental problems in managing oxeye scad fisheries in WPPRI 713 include limited comprehensive stock data, resulting in suboptimal resource utilization and potential unsustainability. This study aims to estimate the sustainable potential, utilization rate, optimum effort, and allowable catch as the basis for sustainable oxeye scad fisheries management. This study uses a quantitative approach based on statistical data for ten years (2015–2024), analyzed using the Schaefer surplus production model. The results indicate that the sustainable potential of oxeye scad reaches 63,404,117 tons/year, the utilization rate is 18.99%, the optimum effort is 3,730,925 units, and the allowable catch is 50,723 tons/year. These results confirm that oxeye scad stocks are in a productive condition and opportunities for utilization development are still wide open, but still require management control through regulation of fishing effort and the implementation of quotas based on the allowable catch. In conclusion, oxeye scad fisheries in WPPRI 713 can still be developed safely while adhering to established biological limits
Efek Sinergis Madu dan Air Kelapa terhadap Maskulinisasi, Daya Tetas, dan Tingkat Kelangsungan Hidup Larva Ikan Nila (Oreochromis niloticus) Azis, Irwan; Cahyono, Indra
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.81

Abstract

This study investigates the synergistic effects of honey and coconut water as natural masculinization agents on Nile tilapia (Oreochromis niloticus) larvae. The experiment evaluated the impact of these natural substances on sex ratio, hatchability, growth performance, and survival rate. A total of four treatments were tested: honey (15 ml/L), coconut water (30%), a combination of both, and a control group. Results showed that the combination of honey and coconut water yielded the highest masculinization ratio (94%), significantly higher than the control group (53%). Additionally, the combination treatment also exhibited superior hatchability (77.5%) and growth performance compared to the other treatments. Survival rates were highest in the combination group (94.67%), followed by coconut water (88.67%), honey (87.33%), and control (73.67%). This study provides promising evidence that honey and coconut water can be used as sustainable, eco-friendly alternatives to synthetic hormones in tilapia aquaculture.
Pemanfaatan Eceng Gondok (Eichhornia crassipes) Dengan Fermentasi Limbah Tuna (Thunnus albacares) Sebagai Pakan Ikan Nila (Oreochromis niloticus) Cahyono, Indra; Takege, Stefanus; Kantun, Wayan
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.107

Abstract

This study aims to analyze the effect of the use of water hyacinth (Eichhornia crassipes) fermented with tuna waste (Thunnus albacares) on the growth, feed efficiency, and survival of tilapia (Oreochromis niloticus). Fermentation is carried out using Lactobacillus sp. and Saccharomyces cerevisiae for five days in anaerobic conditions at 35°C. A complete randomized design was used with four fermentation dose treatments (0, 10, 20, and 30 ml/kg feed) as well as three replicas. The results showed that a fermentation dose of 20 ml/kg resulted in the highest absolute weight growth (167.6 ± 11.24 g), the best specific growth rate, the lowest feed conversion ratio (FCR) (0.81), and the highest survival rate (93.3 ± 1.92%). Excessive fermentation doses (30 ml/kg) reduce feed digestibility due to increased crude fiber. Statistical analysis showed a significant influence (p < 0.05) between treatment on growth and feed efficiency. The results indicate that fermentation of fish stomach waste at moderate doses can increase the nutritional value of water hyacinth and support the concept of zero waste aquaculture using environmentally friendly local materials
Asosiasi Ikan Karang Pada Media Transplantasi Rangka Model Penyu di Pulau Barrang Caddi, Kota Makassar Lapong, Muh. Imran; Krisnayanti, Krisnayanti; Fathuddin, Fathuddin; Wulandari, Sri
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.108

Abstract

Recent studies show the importance of artificial structures in supporting the recovery of coral reef ecosystems, particularly in improving the association of reef fish that play an important role in the ecological balance of tropical seas. The innovation in the use of turtle-shaped transplant skeletons is the main highlight because it is able to attract higher biodiversity than conventional methods. This study aims to evaluate the parameters of water quality, diversity index, and abundance of reef fish species associated with the transplant structure. Data collection was carried out using the Underwater Visual Census (UVC) method at two different sampling moments of the season. The first sampling is during the rainy season, and the second sampling is during the dry season. The environmental parameters measured included salinity, temperature, pH, and water currents, while biotic indicators included the Shannon-Wiener diversity index (H') and species density (ind/m²). The results showed that all water quality parameters were within the standard range of marine quality for marine life (First side: salinity 32.6 ppt; temperature 31 °C; pH 7.7; current 0.05 m/s and second sampling: salinity 32 ppt; temperature 30.6 °C; pH 7.5; current 0.07 m/s). A total of sixteen species of fish were found to be associated with transplanting media, including Plotosus lineatus, Siganus margaritiferus, Ptereleotris heteroptera, Abudefduf vaigiensis, Chromis atripectoralis, Aeoliscus strigatus, Petroscirtes mitratus, Chaetodon octofactiatus, Abudefduf sexfactiatus, Meiacanthus grammistes, Cheilodipterus artus, Cheilinus chlorourus, Siganus virgatus, Chrysiptera parasema, Synanceia verrucosa and Sargocentron xantherythrum. The first sampling showed a lower diversity value (H' = 316.76; D = 2.3 ind/m²) compared to the second sampling (H' = 322.10; D = 3.28 ind/m²). This difference is influenced by dry season conditions that lead to increased clarity and penetration of sunlight, which significantly supports the abundance of biota. These findings confirm the potential of innovative transplant structure design in supporting sustainable coral fisheries conservation.
Analasis Sintasan dan Pertumbuhan Kerang Pada Sistem Integrated Agriculture Aquakulture (IAA) Model Floating-Bed Berbasis GIS Dwi Putra, Andrian Dwi; Kabangga, Arnold; Nursyahran, Nursyahran; Heriansah, Heriansah; Pratama, Is Arianto
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.109

Abstract

Fish farming activities in ponds produce waste in the form of feed residues and metabolic products such as urine and feces. To minimize the accumulation of these residual nutrients, an Integrated Multi-Trophic Aquaculture (IMTA) system is applied that combines organisms of different trophic levels: fed organisms (fish, shrimp), organic extractive organisms (sea cucumbers, shellfish, sea urchins), and inorganic extractive organisms (seaweed). This study aims to evaluate the influence of floating-bed-based integrated cultivation system on the survival and growth of kijing clams (Corbicula sp.). The experimental design used a Group Random Design (RAK) with nine units of experimental ponds at the People's Hatchery Unit (UPR) Sipurennu, Soppeng Regency, for 90 days. Three treatments were tested based on floating-bed moving time intervals: A (no displacement), B (10-day replacement), and C (20-day replacement). The main parameter observed was Absolute Weight Growth (PBM). The results showed that the highest PBM was found in treatment B (117.6 g), while the lowest was in treatment A (31.5 g). The ANOVA test showed significant differences between treatments (P<0.05), indicating that the frequency of displacement of extractive species affects the growth rate. In conclusion, the Integrated Agriculture-Aquaculture (IAA) system with a floating-bed model has a significant impact on the survival and growth of kijing mussels through the management of ecological utilization of aquaculture waste
Analisis Sistem Pertumbuhan dan Sintasan Ikan Kakap, Kerang Hijau dan Anggur Laut Pada Budidaya Terintegrasi Sistem Resirkulasi Terkontrol Lusiana, Lusiana; Heriansah, Heriansah; Kabangnga, Arnold; Muchlis, Nur Annisa Firliana; Akmal, Muh. Imanuddin
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.110

Abstract

Integrated aquaculture or IMTA is a cultivation method that involves several communities with different trophic levels, in terms of the utilization of food sources (energy) in the waters. To determine the effect of species combinations on snapper growth in integrated cultivation of controlled recirculation system and To determine the effect of species combination on snapper survival in integrated cultivation of controlled recirculation system, the research method used was Complete Random Design (RAL) with 4 treatments and 3 replications and used ANOVA (Analysis Of Variance) data. The results showed that the survival of white snapper during 5 weeks of maintenance showed that the cultivation system had a significant effect on the ability of fish to survive, with the highest value in P4 treatment (IMTA) of 85.0% and lowest in P1 treatment (monoculture) of 43.80%, while P2 and P3 treatment reached 54.20% and 60.40% respectively. This pattern indicates that the integration of snapper with green shellfish and sea grapes in the IMTA system is able to create a more stable maintenance environment and support fish survival through the use of feed waste and feces as a source of nutrition for other organisms, thereby reducing the accumulation of toxic materials such as ammonia that have the potential to trigger stress and death. The results of ANOVA's analysis, which showed a significant influence of species combinations on synthesizers, as well as Tukey's follow-up tests, which confirmed the very real difference between P4 and other treatments, reinforced that integrated aquaculture approaches are more effective than monocultures or simple polycultures in improving the survival of white snapper in a closed recirculation system

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